Conical water-cock.



I UNITED STATES PATENT OFFICE.

EDWARD A. POHLMAN, OF' NEV YORK, N. Y.

como/u. WATER-COCK.

SPECIFICATION forming part of Letters Patent No. 645,184, dated March 13, 1900.

Application led April 14, 1899.

' the handle-of which the following is a specication.

My invention relates to improvements to water-cocks; and the objects of myimprovements are, first, to provide by a longitudinal air-chamber passing through the center of the core or valve the Vstern to the inside of shell of handle, a water-cock containing an air-cushion which prevents concussion or water-hammerin g second, to provide a selftightening water-cock by a metallic conical 4shape core or valve having its small end looking downward Vin waterway adapted to its shape and held firmly in its seat by a spring around the tubular stem and between the superior part of the core or valve and bonnet of cock; third, to provide a durable and lasting water-cock which requires no washers and prevents the swelling and ruptureof waterpipes by concussion or water-hainmerin g, and, fourth, to provide a water-cockwhich overcomes the eects of heat expansion.v I attainv these objects by the mechanism illustrated in the accompanying drawings, in which-- Figure 1 is the external view of the watercock. Fig. 2 is a sectional view of the entire cock. Fig. 3 is a sectionalview of the barrel or shell of cock. Fig. 4; is a sectional view of the core or valve, stem, and handle; Fig. 5, a spring;v Fig. 6, a side View of bonnet, and Fig. 7 a top View of bonnet.

Like letters refer to similar parts throughout the several views.

-The core lor valve A is of conical shape, its largest end being attached to stem B, its smallest end when attached to and in the waterway C of cock being downward, the core or valve A on one side having an opening D for the passage of water to spigot E when the water is turned on, and when the water is turned oft the opening D is firmly pressed Serial No. 713,068. (No model) against the blank side of the, barrel or shell of cock: Passing through the center of core or valve A is a longitudinal opening or airohamber F, vwhich extends upward through the tubular stem B into the shell 'of handle G. The waterway C from just below the attachment of the spigotl E is adapted to the form and shape of the core or valve A that the core or valve may set tightly in the waterway C at that point. The spring H when in position is around the tubular stem B between the superior surface of the core or valve A and handle G and held in place by bonnet I, which has an opening J in its center for the passage of the stem B. The spring H exerts a force downward upon the core or valve A and keeps it firmly inl its seat invwaterway Y C. The longitudinal air-chamber F above the opening D in core or. valve A having no vent forms an vair-cushion to overcome the water-pressure in waterway C. Fig. 2 shows a sectional view of the aforesaid parts ofy the water-cock in position and ready for use.

I am aware that prior to my invention water cocks and faucets have been made having.v

and containing a core or valve, stem, handle, spring, bonnet, and air-chamber. 1 therefore do not claim such a combihation,broadly; but

Vhat Ido claim as my invention, and desire to secure by Letters Patent, is-

1. A water-cock c'ontainin g a conical-shape v -metallic core or valve A its largest end being attached to a tubular stem B and its smallest end being downward in a-waterway C adapted to its form or shape, the core or valve A havingV longitudinal chambervF- through its center, and an opening D on one side for the passage of water to spigot E and firmly held downwardly on the waterway O by the spring H, thereby overcoming the effects of heat expansion and a self-tightening water-cock without the use of washers, substantially as shown and described.

2. A combination of a conical-shape metallic core or valve A having a central longitudinal chamber F and an opening D on its side for the passage of water to spigot; a tubular hollow stem B, a hollow handle G, waterway C cut out and adapted to the shape of core or valve A, and spring H holding and pressing the core or valve A in its seat in water- IOO way C thereby without the use of washers making a self-tightening water-cock substantially as shown and described.

3. A combination of a eonicalshape metallic core or valve which does not leave its seat in waterway C which is corresponding in shape, being firmly held therein by the spring H operating with a downward pressure, having a central longitudinal opening or chamber F an opening on its side D for the passage of water to spigot when water is turned on, and when the water is turned off the opening D is brought in close contact with the blank shell or barrel of cock, thus forming a selftightening water-cock substantially as shown and described.

4. A combination of a conical-shape metalliccore or valve A which does not leave its seat in waterway C, a tubular hollow stern B; a hollow handle G; a central longitudinal airchamber F forming an aircushion above opening D to inside of shell of handle G substantially as shown and described, thereby preventing concussion or water-hammering and the 'eiects of heat expansion.

5. A combination of a metallic conical-shape core or valve; tubular hollow stem 'and handle containing a central longitudinal air-chamber having no vent, extending from bottom of core or Valve A to inside of shell of handie; a spring around the tubular hollow stein B between core or valve A and handle G, held in position by a bonnet I Vattached to water-cock, substantially as shown and described to prevent rupture or fracture of water-pipes by concussion or water-hammering; (i. A combination of a conical-shape corel or f s l '645,184

valve A with its small end in a waterway C; its largest and upper end being attached to stem B, it having a central longitudinal opening, and an opening on one of its sides D; a tubular hollow stem B; a hollow handle G; a waterway C cut out and adapted to the shape of core or valve A; a central longitudinal airchamber F extending through core or valve Vand tubular stem to inside of shell of handle,

forming an air-cushion above opening D in core or valve; a spring H around the stem B between core or valve A and handle G, held in position by bonnet I, having` a downward pressure. upon the core or valve A, and holding it firmly in its seat in the waterway C, substantially 'as shown and described, forniing a water-cock which without the use of washers is self-tightening, prevents concussion or water-hammering and overcomes the effects of expansion and contraction produced by cold or heat.

f 7 A combination of a waterway C in shape adapted to a conical core or valve A: a conical core or valve A havinga central longitudinal opening l", and an opening D on one side of core or valve A for the passage of water when turned on: a hollowtubular stem B: a hollow handle'G, thereby forming an airchamber from thebottorn of core or valve A to inside of shell of handle G, thereby to preventconcussion or water-hammering in cock or water-pipes,

EDWARD A. PoHLMAN. 

